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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 33, Iss. 19 — Oct. 1, 2008
  • pp: 2224–2226

Biomimetic subwavelength antireflective gratings on GaAs

Chih-Hung Sun, Brian J. Ho, Bin Jiang, and Peng Jiang  »View Author Affiliations


Optics Letters, Vol. 33, Issue 19, pp. 2224-2226 (2008)
http://dx.doi.org/10.1364/OL.33.002224


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Abstract

We have developed a simple and scalable bottom-up approach for fabricating moth-eye antireflective coatings on GaAs substrates. Monolayer, non-close-packed silica colloidal crystals are created on crystalline GaAs wafers by a spin-coating-based single-layer reduction technique. These colloidal monolayers can be used as etching masks during a B Cl 3 dry-etch process to generate subwavelength-structured antireflective gratings directly on GaAs substrates. The gratings exhibit excellent broadband antireflective properties, and the specular reflection matches with the theoretical prediction using a rigorous coupled-wave analysis model. These bioinspired antireflection coatings have important technological applications ranging from efficient solar cells to IR detectors.

© 2008 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(310.1210) Thin films : Antireflection coatings
(220.4241) Optical design and fabrication : Nanostructure fabrication
(310.6628) Thin films : Subwavelength structures, nanostructures

ToC Category:
Thin Films

History
Original Manuscript: July 29, 2008
Manuscript Accepted: August 15, 2008
Published: September 29, 2008

Virtual Issues
Vol. 3, Iss. 12 Virtual Journal for Biomedical Optics

Citation
Chih-Hung Sun, Brian J. Ho, Bin Jiang, and Peng Jiang, "Biomimetic subwavelength antireflective gratings on GaAs," Opt. Lett. 33, 2224-2226 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-19-2224

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